city desk中文short time,a heavy cold ,a slow learner,a way acr

city desk中文short time,a heavy cold ,a slow learner,a way acr city desk中文 译中文 short time a heavy cold a slow learner a way city desk中文 译中文 short time空 a heavy cold 空a slow learner空 a a short time ago中文 a short time a heavy crop/cold/traffic是什么意思? a short time和short tim after a short time还是in a short time? 翻译：a short time ago in a short time为什么time可数 So short a time为什么用a in only a short time,computers have changed the way( )many k